- Now that we've looked at the TCP/IP model generally,…let's go ahead and look at each particular layer…of the TCP/IP model, like we did with the OSI model.…The first layer we're going to look at…is the TCP/IP application layer.…The TCP/IP application layer defines the protocols,…services, and processes that allow both programs…and users to interface with the network.…The application layer also defines how programs interface…with the transport layer services…below the application layer…that enable it to use the network.…

There are a number of application layer protocols…that are commonly used and that you may have heard of.…We'll look at a few of those.…First, we have the HTTP.…HTTP is hypertext transport protocol,…and is used to transport web pages across the internet.…Next, we have Telnet, which is a remote access protocol…that allows you to remotely access other computers…using command line.…The main drawback of Telnet is…that it doesn't send the passwords in an encrypted format,…it sends the passwords in clear text.…

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10/13/2015

Understanding the foundations of networking is paramount for any IT professional. This course covers the very basics. Professor of computer science Tim Pintello introduces the core networking topologies and implementation examples. He will also explain and compare the OSI and TCP/IP models, and introduce viewers to commonly used network devices, such as NICs, hubs, switches, and routers.